Floor Drain Calculation

The sizing of roof drains must be large enough to quickly carry away all.

Floor drain calculation.

The prinsco drainage calculator estimates the capacity of tile drainage systems. Factors which affect proper roof drainage are deck slope drain size and placement of drains. The above sizing data is offered as a guide only. Calculate drains needed.

The steeper the grade of the installed pipe the more water it will carry. Q flow rate gallons per minute cd discharge coefficient 0 6 assumed a open area of grate square inches g acceleration 32 ft sec sec h head above floor inches. Take the roof s total square footage and divide by the total square footage handled by one drain. The full flow capacity of a drain is not realized until the water reaches approximately 2 5 above the inlet in a four inch drain and 3 5 in a six inch drain.

A particular pipe size on a given grade will only carry a certain amount of water. Most floor drain bodies are available with a flange for either anchoring the drain in the floor slab or for use as a flashing flange in upper floors and waterproofed areas. This table is based on zurn s roof drain vertical requirement for horizontal roof areas at various rainfall rates table. Recommended grate free areas for various outlet pipe sizes 1 1 2 2 04 3 06 4 08 2 3 14 4 71 6 28 3 7 06.

From your backyard patio to the neighborhood aquatic center from the factory floor to a professional sports facility nds offers superior quality drainage solutions for every environment. Checks the capacity of drain tile on existing drainage systems. Sizes the piping needed on the acreage to. Below illustration is a typical application using the calculator.